You have a read-only tablespace on read-only media. You want to perform a media recovery on the existing data files, but using a backup control file. The backup control file indicates that the status of the read-only tablespace was read/write when the control file was backed up. What should you consider?
A.
take data files from the read-only tablespace offline before performing a recovery
B.
recovery using backup control file is not possible, so restore all the files from the last full database backup, and then open the database
C.
drop the read-only tablespace and re-create the tablespace after recovery
D.
perform a recovery; status of the tablespace in control file will be changed automatically